package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

/**
 * 执行预编译SQL
 */
public class JDBCDemo8 {
    public static void main(String[] args) {
        User user = InputUtil.getInputObject(new User());
        try(
                Connection conn = DBUtil.getConnection();
                ) {
            String sql ="SELECT id,username,password,nickname,age "+
                    "FROM userinfo "+
                    "WHERE username=? AND password=? ";
            PreparedStatement ps = conn.prepareStatement(sql);
            ps.setString(1,user.getUsername());
            ps.setString(2,user.getPassword());
            ResultSet res =ps.executeQuery();
            if (res.next()){
                System.out.println("登录成功");
            }else {
                System.out.println("登录失败");
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }

    }
}
